Borderou de evaluare (job #541547)

Compilare: user.c: In function ‘main’: user.c:15:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] user.c:16:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] user.c:18:14: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] user.c: In function ‘operm’: user.c:8:21: warning: ‘c’ may be used uninitialized in this function [-Wuninitialized] user.c: In function ‘main’: user.c:8:21: warning: ‘c’ may be used uninitialized in this function [-Wuninitialized] user.c:4:13: note: ‘c’ was declared here